基于认知无线电的频谱检测算法

Spectrum Detection Algorithm Based on Cognitive Radio

认知无线电技术能够解决当前无线频谱资源匮乏而频谱利用率却非常低这一矛盾。无线频谱检测是认知无线电的关键技术。文章对匹配滤波检测、能量检测等单节点频谱检测方法进行了研究,并通过仿真对比分析了各检测算法的检测性能。在此基础上引入了合作检测方法,通过与单节点检测算法的对比仿真得出合作检测方式在性能上的优势。

At present,wireless spectrum is a shortage of resources and the utilization of spectrum resources is very low.Cognitive radio technology is just to solve this contradiction.Wireless spectrum detection is the key technology of cognitive radio.In this paper,some single-node spectrum detection algorithms such as matched filtering detection,energy detection are described,and by comparing,the detection performance of these algorithms is analyzed.A cooperative detection method of spectrum detecting is introduced to show its performance advantage compared with the single-node.